water heaters

17 Manufacturers of Heat Pump Water Heaters Are Now on the Market (With More Coming…

Every year, the number of manufacturers making residential heat pump water heaters (HPWH) for the American market continues to grow. A decade ago, there were just a handful of HPWH manufacturers. In 2026, with Lennox and Reservoir bringing HPWHs to market, the total number has reached 17. Two more are … [continued]

Ninth Circuit Rejects Industry Challenge to SoCal Clean Air Rule for Boilers

San Francisco, CA — The Ninth Circuit Court of Appeals today upheld South Coast Air Quality Management District (SCAQMD) zero-emission standard for boilers and water heaters, rejecting an industry challenge to a landmark clean air rule that will clean up pollution from industrial and commercial equipment. The People’s Collective for Environmental Justice, … [continued]

The US Saw Record Percentages Of Heat Pump & Electric Water Heater Sales In 2023

The “Electrify Everything” movement is full steam ahead in American homes, according to the latest data from AHRI which tracks annual shipments of furnaces, heat pumps, and water heaters. Heat pumps for space heating and electric water heaters have set new records, and gas equipment continued to decline as a … [continued]

A. O. Smith’s New 120V Heat Pump Water Heater Allows You To Plug It Into…

A. O. Smith just released a 120V plug-in heat pump water heater (HPWH), which is the second model to arrive on the mass market (the first to market, Rheem, I reviewed here). It is an exciting product with some innovative designs that allows many households to more easily replace their … [continued]

Does PNNL Deliver Energy Savings Through Rules & Codes for Buildings? Let Us Count the…

Here’s a sampling of recent buildings-related rules, codes, and standards that will substantially reduce energy use and carbon emissions Energy efficiency rules and requirements for buildings may not make a splash on the nightly news, but they have gained favor in the Biden Administration and are helping slash energy consumption, … [continued]